Pawl-and-ratchet mechanism.



H. T. VERNER & G. C. HANSON.

PAWL AND RATGHET MEGHAEISM. APPLICATION FILED 1330.13, 1912.

Patented Aug. 11, 1914,

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UNITED STATES PATENT OFFICE.

HAMILTON T. VERNER, OF CHARLOTTE, NORTH CAROLINA, AND .CORBIN G. HANSON,

or RICHMOND, VIRGINIA.

lA-WL-AND-RATCHET MECHANISM.

To all whom it may concern Be it known that we, HAMILTON T. VER- NER andCoRBIN C. Ransomcitizens of the United States, residing, respectively,at Charlotte and Richmond, in the counties of Mecklenburg and I-Ienricoand States of North Carolina and Virginia, have invented certain new anduseful Improvements in Pawl-anddtatchet Mechanism, of which thefollowing is a specification.

Our invention relates to wire tighteners, and more particularly todevices used for drawing taut the guy wires of telegraph poles and .thelike.

The objects of the invention are to provide a device of the characterdescribed which will positively hold the wire when once pulled up untilit is permanently clamped; to provide a device in which the pullingforce is exerted in opposite directions and consequently equalized; andto provide a device which is portable, simple and compact inarrangement, and comparative inexpensive to manufacture.

To the accomplishment of the recited ob jects and others coordinatetherewith, the preferred embodiment of my invention resides in thatconstruction and arrangement of parts hereinafter described, illustratedin the accompanying drawings, and embraced within the scope of theappended claims.

In said drawings :Figure 1 is a side elevation of our complete device.Fig. 2 is a top plan view thereof. Fig. 3 is an end elevation of theinvention. Fig. 4 is a detail perspective view of one of the sidemembers, showing the construction of the spring, and Fig. 5 is a sideelevation of the side member illustrating the application of the springto maintain the pawl disengaged.

Referring more particularly to the drawings for a detail description ofour invention, the numeral 1 designates the frame comprisinglongitudinal side members 2 terminally connected by the cross rods 3 and4, the latter being provided with a square shoulder 4' at one end for apurpose which will be hereinafter described. A V-shaped yoke 5 issuitably secured to opposite extremities of each cross rod and has itsouter end fashioned into an eye, a 6. It will be understood that theside members 2, cross rods 3 and 4, and yokes 5 constitute theSpecification of Letters Patent.

Application filed December 13, 1912;

Serial No. 736,595.

frame. ournaled medially of the side members 2 is a squared axle 7carrying a drum or spindle 8 provided centrally thereof with a fin 9 andformed with an integral ratchet 10 adapted to be engaged by the pawl 11having a lateral extension 11 and pivoted upon the adjacent extremity ofthe cross rod 4. Cooperating with the pawl 11 is a coil spring 12 formaintaining same engaged. A flat spring 13 having an upstanding medialprojection or trip 13 is secured upon the top of the adjacent sidemember 2 for the purpose of holding the pawl inactive. On the outerproximal end of the axle is a smaller ratchet 14, and on the extreme ordistal end of the axle is secured a lever 15, having pivotally fastenedthereto by means of the set screw 16 a gravity pawl 17 designed forengagement with the ratchet 14. Extending through-the fin 9 of the drumis a wire rope or cable 18, the said fin serving to guide the rope sothat each half thereofwill be wound in opposite directions around thedrum. The outer extremities of the rope pass through the single blocks19, equipped with hooks 20, and are suitably secured to the eyes 6, asat 21. In this connection it will be noted that the blocks 19 aredisposed oppositely relative to their respective yokes.

In operation, one of the hooks 20 is fastened in the clamp usuallyattached to the guy wire after it has been passed through the groundanchor, while the other hook is secured to the wire coming from the poleon the opposite side of the anchor. Upon forcing lever 15 to the leftthe drum 8 will be rotated through the medium of ratchet 14 and pawl 17whereupon both extremities of the rope 18 are wound upon the drum andthe blocks 19 drawn toward each other. WVhen the guy wire is as tight asdesired it will be understood that the ratchet 10 is locked by the pawl11 and the spring 12 so that no retrograde movement of the drum canoccur. A clamp is now secured on the guy wire and the work is completed.To

uncouple the device pawl 11 is elevated from engagement with ratchet 10and swung rearwardly, the lateral extension 11 riding over the medialprojection 13 until the outer wall thereof is constrained upwardly bythe spring 13, when the rope is pulled from around the drum. Byproviding a square I Patented Aug. 11, 1914.

shoulder on the cross rod 4 the latter is prevented from turning withrespect to the longitudinal side pieces of the frame.

It will thus be seen that we have devised a guy puller which isexceedingly simple and which can be operated expeditiously to do thework for which it is adapted.

It should be understood that in its broader aspect the inventioncomprehends the employment not only of the various means described, butof equivalent means for performing the recited functions.

While the arrangement shown is thought at the present time to bepreferable, it is desired to reserve the right to effect suchmodifications and variations thereof as may come fairly within the scopeof the appended claims.-

What is claimed, is

1. In a device of the kind described, a frame, a rotary elementrevolubly mounted therein, a ratchet fast on the axle of the rotaryelement, a pawl pivotally mounted upon the frame in cooperation withsaid ratchet, asecond ratchet on said axle, a lever on said axle, a pawlpivotally mounted on the lever for engagement with the last-namedratchet, a spring supported upon said frame and having an upturnedmedial projection, a

lateral extension on the first-named pawl for cooperation with saidprojection and a spring cooperating with the first-named pawl to lockthe first-named ratchet to prevent retrograde movement of the rotaryelement.

2. In a device of the kind described, a frame, yokes secured to oppositeextremities of said frame with their outer ends forming eyes, a squaredaxle journaled in said side frame, a rotary element on said axle, aspring secured to said frame, a ratchet fast on said rotary element, apawl pivotally mounted on the frame and cooperating with said spring, asecond ratchet fast on said axle, a lever on the outer end of said axle,a pivotally mounted gravity pawl on said lever for cooperation with thelast-named ratchet and cooperating means on said frame and thefirst-named pawl for holding the latter in its inoperative position.

In testimony whereof we hereunto afiix our signatures in presence of twowitnesses.

HAMILTON T. VERNER. CORBIN G. HANSON.

Witnesses J. M. I-IAMMERLY, W. E. BAYLISS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

